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Refraction through a Rectangular Glass Slab

A light ray p...

Question

A light ray passing from crown glass to flint glass, then the speed of light is:

A

smaller in crown glass than in flint glass

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B

larger in crown glass than in flint glass

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C

same in crown glass and in flint glass

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D

zero in crown glass and flint glass

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Solution

The correct option is B larger in crown glass than in flint glass
Refractive index of flint glass(1.65) is more than that of crown glass(1.55). So, the speed of light in flint glass is lesser than that in crown glass.
Option B

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